1023234021 has 12 divisors (see below), whose sum is σ = 1479057580. Its totient is φ = 681670080.

The previous prime is 1023234013. The next prime is 1023234031. The reversal of 1023234021 is 1204323201.

It can be written as a sum of positive squares in 2 ways, for example, as 107868996 + 915365025 = 10386^2 + 30255^2 .

It is not a de Polignac number, because 1023234021 - 2³ = 1023234013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1023233985 and 1023234003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023234031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26920 + ... + 52641.

Almost surely, 2^1023234021 is an apocalyptic number.

It is an amenable number.

1023234021 is a deficient number, since it is larger than the sum of its proper divisors (455823559).

1023234021 is a wasteful number, since it uses less digits than its factorization.

1023234021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80996 (or 80993 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1023234021 is about 31988.0293391137. The cubic root of 1023234021 is about 1007.6854561140.

Adding to 1023234021 its reverse (1204323201), we get a palindrome (2227557222).

It can be divided in two parts, 10232 and 34021, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 1023234021 in words is "one billion, twenty-three million, two hundred thirty-four thousand, twenty-one".